Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantas voltas têm 50 pontos?
 ###Tabelas: CREATE TABLE nhl_draft (nhl_draft_id AUTO_INCREMENT PRIMARY KEY, Round INT, Pick INT, Player VARCHAR, Nationality VARCHAR, College/Junior/Club Team VARCHAR) CREATE TABLE 1994_draft_picks (1994_draft_picks_id AUTO_INCREMENT PRIMARY KEY, Round INT, Overall INT, Player VARCHAR, Nationality VARCHAR, Club team VARCHAR) CREATE TABLE participating_schools (participating_schools_id AUTO_INCREMENT PRIMARY KEY, School VARCHAR, Location VARCHAR, Enrolment INT, Founded INT, Denomination VARCHAR, Day/Boarding VARCHAR, School Colours VARCHAR, Abbreviation VARCHAR, In competition since INT) CREATE TABLE table_of_federal_taxation_and_spending_by_state (table_of_federal_taxation_and_spending_by_state_id AUTO_INCREMENT PRIMARY KEY, State VARCHAR, Revenue (millions) VARCHAR, Population INT, Revenue per capita VARCHAR, Spending (millions) VARCHAR, Spending per capita VARCHAR, Net contribution per capita VARCHAR) CREATE TABLE race_results (race_results_id AUTO_INCREMENT PRIMARY KEY, Driver VARCHAR, Team VARCHAR, Laps VARCHAR, Time/Retired VARCHAR, Grid VARCHAR, Laps Led VARCHAR, Points VARCHAR)  
SELECT Laps FROM race_results WHERE Points = 50